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Verification of a blind mismatch error equalization method for randomly interleaved ADCs using a 2.5V/12b/30MSs PSAADC

Författare:
  • Martin Andersson (Assistant Professor)
  • J Elbornsson
  • J-E Eklund
  • J Alvbrant
  • H Fredriksson
Publiceringsår: 2003
Språk: Engelska
Sidor: 473-476
Publikation/Tidskrift/Serie: Proceedings of the 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705)
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

A 2.5V/12b/30MS/s randomly time interleaved ADC system has been implemented. Using this circuit an earlier presented [6] blind gain error equalization method has been verified. It is verified that the gain in each ADC unit can be found and equalized by using the blind estimation method, since the randomization assures that there is no correlation between the ADC unit used and the input data. It has been found that the blind gain error equalization attenuates the energy of the gain distortion tones by up to 72 dB. The SNDR of the random time interleaved ADC system was improved by 10.1 [dB] after the amplitude offset and gain equalization was performed. The measured system SNDR is only 2.1 [dB] worse than the measured SNDR of a single ADC unit

Disputation

Nyckelord

  • Technology and Engineering
  • gain distortion
  • blind estimation method
  • randomization
  • amplitude offset
  • single ADC unit
  • blind mismatch error
  • SNDR
  • blind gain error equalization method
  • verification
  • randomly interleaved ADCs

Övriga

29th European Solid-State Circuits Conference
16-18 Sept. 2003
Estoril, Portugal
Published
Yes
  • ISBN: 0-7803-7995-0

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